31051210

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{251}}^1$

素因数の和:486

約数の個数: 32

約数和(自身を含む): 57153600

約数和(自身を除く): 26102390

約数列:

[1, 2, 5, 10, 89, 139, 178, 251, 278, 445, 502, 695, 890, 1255, 1390, 2510, 12371, 22339, 24742, 34889, 44678, 61855, 69778, 111695, 123710, 174445, 223390, 348890, 3105121, 6210242, 15525605, 31051210]

約数ペア:

[(1, 31051210), (2, 15525605), (5, 6210242), (10, 3105121), (89, 348890), (139, 223390), (178, 174445), (251, 123710), (278, 111695), (445, 69778), (502, 61855), (695, 44678), (890, 34889), (1255, 24742), (1390, 22339), (2510, 12371)]